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<title>无标题文档</title>
<script type="text/javascript">
	var shuzu = ['a','b','c','a','a','a','a','d','e','c','f','d'];

	function quchongfu(arr){
		for(var i=0;i<arr.length-1;i++){//循环数组，将每个元素都拿出来对比
			for(var j=i+1;j<arr.length;j++){
				if(arr[i] == arr[j]){//如果i号和j号一样，那么就删掉j号元素
					arr.splice(j,1);
					j--;
				}
			}
		}

		return arr;
	}

	alert(quchongfu(shuzu));
</script>
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